What is Data Acquisition System?


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Data Acquisition System

The collection of hardware and software components that enable a computer to receive physical signal.

Data acquisition process

Measures analog and digital signals
Convert measurements to digital values.

Data acquisition components

Sensors
Signal conditioners
Analog to digital and digital to analog converter
Software

Data acquisition system

Sensors

Basic principle of sensors

Transducer: a device that converts energy from one form to another.
Sensor:converts a physical parameter to an electric output.
Actuator: convert an electric signal to a physical output.

Analog - Digital Converter (ADC)

Types of ADC

Integrating ADC - Internal voltage controlled oscillator.It is slow.

Successive approximation ADC - Digital code driving the analog reference voltage

Flash ADC - A bank of comperators