View real-time data on voltage, current, power, etc.

I have to make a program in appdesigner, with the help of matlab where I will put real voltage and current data, from that I will get the rest of the values, but I don't know the programming so that the variable can be seen in a text box, for example of power and its unit of measurement kw, and at the same time it is interspersed between measurements, voltage, current, power and so on, with a timer or something like that.

Answer 1

[Harsh]

Hi @Héctor,

To create a MATLAB App Designer application that processes real-time voltage and current data to compute and display power (in kilowatts) and other electrical parameters, follow these steps:

1. Accessing User Inputs

In your App Designer app, you can use "NumericEditField" components to allow users to input voltage and current values. To retrieve these values within your code, access the "Value" property of the respective components.

2. Display Computed Values in Text Areas

To show results like voltage, current, and power (with units), update a "TextArea" or "Label" using "sprintf". For example -

app.PowerTextArea.Value = sprintf('Power: %.2f kW', power_kW);

3. Real-Time Updates Using Timers

Use a "timer" object to refresh calculations and display regularly. Start the timer with "start(app.myTimer)" and stop it with "stop(app.myTimer)" from UI buttons. In the "updateReadings" function, read input values, compute power, and update displays.

Use the following command to view documentation for "timer"

doc timer