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+---- Thread: DAQ - DATA ACQUISITION VIRTUAL INSTRUMENTATION (/showthread.php?tid=24083)
DAQ - DATA ACQUISITION VIRTUAL INSTRUMENTATION - venugopal - 08-16-2017
DAQ - DATA ACQUISITION VIRTUAL INSTRUMENTATION
[attachment=16805]
SENSOR - PROBE
Converts any BIO, CHM. or PHY quantity into electrical voltage (SIGNAL)
BIO Sensor - Hart-rate (Sensor) into el. signal - voltage
CHM Sensor - pH (Sensor) into el. signal-voltage
PHY Speed - Speed (Sensor) into el. signal- voltage
SIGNAL CONDITIONER
Output signal of the sensor is usually very small signal - consequently:
Very difficult to measure - record
Interference is very high - noise
Signal need to be amplified
Low -level signals are amplified to increase resolution - higher accuracy
Linearization of thermocouple voltage - Same correction factor
Filtering unwanted signals (hardware or software filter
A/D CONVERTER
What is ANALOG (CONTINUES) Signal?
What is DIGITAL (DISCONTINUES) Signal?
File on the PC
DAQ software allows to:
select sampling rate,
graph in real time,
perform statistics,
generate reports