multiple sensors data acquisition

Thread Starter

abad109

Joined Mar 14, 2011
12
My project involves acquiring voltage from several sensors using a 16 channel data acquisition card.
There are 80 sensors, say S1 to S80.
To implement this, i was thinking of using an IC such that Ch1 to Ch16 will be connected to S1 to S16 initially.
Then after some time, Ch1 to Ch16 will connect to S17 to S32 and so on.
A control signal, should cause this switchover to occur at regular intervals of time.
I think mux/demux do such stuff.

Any suggestions to implement this will be gratefully appreciated.

Regards
 

bertus

Joined Apr 5, 2008
22,270
Hello,

What kind of signals need to be aquired?
Are these analog or digital?
If analog what precission do you need?

Bertus
 

designnut

Joined Apr 21, 2011
33
There are so many IC solutions to the problem, multiplexers and A/D circuits available. I think you are hampered by sticking to one particular part. Most everything one needs is in IC form. Find it with google.
 

beenthere

Joined Apr 20, 2004
15,819
You can use relays, too. When choosing analog switches, read the data sheets to see if they can switch up to 10 volts.

Whatever the approach, selecting 80 inputs (perhaps the ground reference for each as well?) is going to be a bit bulky.
 
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