Monitoring Data/Data Logging

Question 1

Sensors measure……..variables then output……..data

Answer 1

physical

analogue

Question 2

What does ADC stand for?

Answer 2

Analogue to Digital Converter

Question 3

Why is an ADC used?

Answer 3

The analogue data that is collected via the sensors, cant be used by a computer so it needs to be converted to digital

Question 4

What is a DAC?

Answer 4

Digital to Analogue Converter

Question 5

What is the order of data logging?

Answer 5

Sensors - ADC - Computer

Question 6

How is the temperature in a swimming pool controlled?

Answer 6

1) Sensors continuously send analogue data about the temp to the ADC
2) The ADC converts the data and send it to the computer
3) The computer reads the data and compares it to the preset temp
4) If the temp isn’t right the computer sends data to the DAC Which converts the data to analogue
5) The analogue data tells the heater to switch on

If the temp is higher the data tells the heater to switch off