SCADA Assignment Semester $12024$Labview Software$$

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Air Conditioning Temperature and Humidity $$ Labview Server & Client Vis using Global Variables $$

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The Server VI is used to simulate thermal control and humidity control. The system will run automatically In automatic mode the system will monitor the ambient temperature and humidity and depending on the value will switch the heater and$/$or dehumidifier on or not.$$

Both the heater$$ and dehumidifier will be activated when the sensor values fall outside the tolerance ranges.$$

Signals will be simulated and the system will react based on running averages rather than single$$ readings$$

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The system will monitor the temperature and humidity at all times.$$

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The system will monitor and display the heater and dehumidifier status at all times.$$

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Suggested indicators to be included in the VI$.$

$-$ Indicators

$-$ o Power on$/$off $$

$-$ o Heater status $$

$-$ o Dehumidifier status $$

$-$ o Current temperature$$ reading $$

$-$ o Current humidity reading $$

Running average of last $6$ above readings$$Historical temperature reading $($Chart$)$

o$$ Historical humidity reading $($Chart$)$

And Optionally:$$ o Max reading$$

o$$ Min reading

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Suggested controls to be included in the VI$.$

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$-$ Controls

$$o$$ Power on$/$off $$

o Temperature setpoint control low

o Temperature setpoint control high

o Humidity setpoint control low $$

o Humidity setpoint control high $$

o Sample Rate $$

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Coding the system $$

Use case structures in decision making e$.$g$.$ when deciding to switch heater on or off.$$ Use signal simulation options in Labview to create input values$$

It may be necessary to add a function to the output from signal simulation to establish trends,$$ e$.$g$.$ to show rising temperature when heater is on and vice versa when it$$s off.$$

Use a sequence structure if you need to control the order in which actions are performed.$$

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Multiple Vis

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$$ Use global variables to build a second VI which shows read only access to Temperature and$$ Humidity readings, current values and running average values.

Insert a control on the client to vary the sample rate on the server.

Note: ensure that the sample rate on the server and the client are in sync$.$