vasyl
Topic Author
Posts: 3
Joined: 27 Oct 2020, 15:14

Vibration Wire Measurements

28 Oct 2020, 13:03

Hi All!
If it's possible to measure vibration wire sensors (piezometers, strain gauge ....) with Kunbus hardware (AiO or RevPi Compact)? Maybe you have example in practice to connect this type sensor with multiplexer.
Sorry if this not correct question ;) (I'm more IT, not electronic)
Last edited by vasyl on 28 Oct 2020, 15:59, edited 1 time in total.
 
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dirk
KUNBUS
Posts: 1421
Joined: 15 Dec 2016, 13:19

Re: Vibration Wire Measurements

28 Oct 2020, 14:04

Hi yes of course you can measure sensors with RevPi products. You are pointing into the right direction. The products you can use depend on
- the sampling rate
- the amount of IOs
The RevPi Core 3 Module may be extended by up to 10 AIO Modules.
The RevPi Connect Module may be extended by up to 5 AIO Modules.
The RevPi Compact already has 10 AIO channels but may not be extended.

Have a look at the spec sheets here.
 
vasyl
Topic Author
Posts: 3
Joined: 27 Oct 2020, 15:14

Re: Vibration Wire Measurements

28 Oct 2020, 16:42

Hi yes of course you can measure sensors with RevPi products. You are pointing into the right direction. The products you can use depend on
- the sampling rate
- the amount of IOs
The RevPi Core 3 Module may be extended by up to 10 AIO Modules.
The RevPi Connect Module may be extended by up to 5 AIO Modules.
The RevPi Compact already has 10 AIO channels but may not be extended.

Have a look at the spec sheets here.
Thank you very much Dirk.
Another question about amount of sensors. For example, we need measure 30 strain gauge (µε and temperature - 2 channels for one sensor).
Campbell Scientific (or other company) has multiplexers (1 mux = 4x16 or 2x32 input). I understand that for one kunbus AIO I can connect 4 multiplexers. But I don't know if this configuration working with Kunbus.
Maybe you give advice me how measure more than couple vibration wire sensors with kunbus. Thanks again
 
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dirk
KUNBUS
Posts: 1421
Joined: 15 Dec 2016, 13:19

Re: Vibration Wire Measurements

10 Nov 2020, 15:29

So theoretically you can realize your idea with multiplexers.
You need two digital outputs for switching. Please note that the input pins of the mux are only 3.3 volts tolerant - clock to switch and reset.
So you either use a RevPi Core/Connect + 1*AIO + 1*DIO + 4*MUX or a RevPi Compact + 4*MUX.

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