explain the term "DATA AQUISTION"

[suvendu]

WHAT IS THE MEANING OF Data Aquistion?

 

[eltonjohn]

data aquisition is the process of collecting real time data with an electronic device .for further processing with a computer. So basically it envolves some kind of analog or digital INPUT DEVICE

 

[IanP]

Goto this site for some mere details:
https://www.chemicool.com/definition/data_acquisition.html
Regards,
IanP

 

[omara007]

a small example of that is the blood pressure measuring device .. and similar medical devices ..

 

[comsians]

Data acquisition is the sampling of the real world to generate data that can be manipulated by a computer.
Sometimes abbreviated DAQ, data acquisition typically involves acquisition of signals and waveforms and processing the signals to obtain desired information.

The components of data acquisition systems include appropriate sensors that convert any measurement parameter to an electrical signal, which is acquired by data acquisition hardware. Acquired data typically is displayed, analyzed, and stored on a PC.

This is achieved by using vendor supplied interactive control software and hardware such as PowerLab, or custom displays and control can be accomplished using a programming language such as experix, LabVIEW, Visual Basic, or C.

 

[power-twq]

I think "data-aquistion" is converting analog signal into digital signal

and store them.

best regards

WHAT IS THE MEANING OF Data Aquistion?

 

[banh]

WHAT IS THE MEANING OF Data Aquistion?

for example, you need to continuously monitor temperature in a room, you have to use some temperature sensors (which converts temperature to voltage?), and you need to convert the corresponding voltage into a number (analog to digital conversion). the process is called data acquisition.

several topics come up on the way:

- sampling rate: how fast/slow you want to sample the temperature.
- resolution: how much precision you want (10 bits, 14 bits, ...)
- ...

there are DAQ cards provided which you can interface with PC (via PCI, USB,..) so that the data can be processed in PC.

 

[kaustubhkhole]

It is basically

Collection of data via sensor.....Then Caliberation.....Then Store.......Process......Then when Required Throw the Required ResulT.....

 

[electronics_kumar]

INTER DISCIPLINARY FIELD in instrumentation enginnering field..acquiring data from the external field

 

[electronics_kumar]

it needs a Sensor/Transducer and a display/measuring device......

 

[jjohn]

Data acquisition is the sampling of the real world to generate data that can be manipulated by a computer. Sometimes abbreviated DAQ, data acquisition typically involves acquisition of signals and waveforms and processing the signals to obtain desired information. The components of data acquisition systems include appropriate sensors that convert any measurement parameter to an electrical signal, which is acquired by data acquisition hardware. Acquired data typically is displayed, analyzed, and stored on a PC. This is achieved by using vendor supplied interactive control software and hardware such as PowerLab, or custom displays and control can be accomplished using a programming language such as experix, LabVIEW, Visual Basic, or C. EPICS is used to build large scale data acquisition systems.

How Data is acquired

Transducers convert measurable physical phenomenon into electric signals. Examples of tranducers include microphones for sound and photocells for light.

Signals may be digital or analog depending on the tranducer used.

Signal conditioning may be necessary if the signal from the tranducer is not suitable for the DAQ hardware to be used. The signal may be amplified or deamplified, or may require filtering.

DAQ hardware is what usually interfaces between a the signal and a PC. It could be in the form of modules that can be connected to the computer's ports (parallel, serial, USB, etc...) or cards connected to slots (PCI, ISA) in the mother board.

Driver Software that usually comes with the DAQ hardware or from other vendors, allows the operating system to recognize the DAQ hardware and programs to access the signals being read by the DAQ hardware.

 

[salma ali bakr]

get signal-> sample (if analog)-> store->process by computer->results are used as required(different according to each system)