Interface USB-6218 DAQ with Controller

[anil1601]

Hello NI Team,

I am completely new in DAQ system. In my application I am taking Analog data from one of the sensor, afterwards converting that data from Analog to Digital using ADC, I am sending that data into PSoc 6 Controller. Now, I want to send that Digital data from PSoc 6 controller to USB-6218.

So, Is it feasible to sending data from controller to DAQ system? If Yes, then which Interface supported by DAQ for this communication?

Hereby, I attached reference image for understand my application.

[crossrulz]

What's the digital protocol coming from the controller?  Parallel bits?  RS-232? TTL UART?  SPI?

[anil1601]

Thanks for the reply.

Currently It is not fixed but most probably it is RS-232 or TTL UART.

[crossrulz]

You don't need a DAQ.  You need a serial port.  USB to RS-232 adapters are all over the place.  I am a big fan of Startech.  Many around here really like FTDI.

[ZYOng]

If your purpose is to read the analog signal, but not learn Op Amp, ADC and MCU, you can just connect the analog signal to USB-6218 directly.

[anil1601]

Yes you are absolutely right, but in our application we require DAQ for the Process on Digital Data and sent output data to PC for showing the signal in LabVIEW or any other software.

So, Is that possible to send digital data to DAQ? or which interface require for sending data from PSoc 6 MCU to DAQ? 

[anil1601]

Hello ZYOng

Yes, My application is same according to your understanding, Read the analog signal from the sensors but we require Op Amp, ADC and as well as MCU because our DAQ system far from the sensors ( atleast 1 to 5m).

So It may be loss the Data or add noise into the analog data Am i right? because in my application it is Body signal.

So which interface supported by DAQ for this communication between MCU and USB-6218? 

Or think about another side i just want to know if i am sending analog signal to USB-6218 directly is there any filter available in DAQ which can remove the noise and i am getting more accurate data?

[crossrulz]

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@anil1601 wrote:

Yes, My application is same according to your understanding, Read the analog signal from the sensors but we require Op Amp, ADC and as well as MCU because our DAQ system far from the sensors ( atleast 1 to 5m).

So It may be loss the Data or add noise into the analog data Am i right? because in my application it is Body signal.

So which interface supported by DAQ for this communication between MCU and USB-6218? 

Or think about another side i just want to know if i am sending analog signal to USB-6218 directly is there any filter available in DAQ which can remove the noise and i am getting more accurate data?

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What it sound like you really want here is to have your conditioning circuitry near the sensors and then use good shielded cables to get the analog signals to the DAQ.  There is no need for the ADC and microcontroller as that would be acting as the DAQ.