Temperature Monitor Simulation Using LabVIEW - Lab Report Example

An Alarm LED was added that is activated when the temperature signal is more than a threshold level selected using a Vertical Pointer slide. This system can be tested by pressing the Run button (arrow icon), but the data generated will not be very useful. A While Loop function was added to keep the program running until a Stop button is pressed. This way, a meaningful graphical data (temperature vs. time) will be displayed at the Waveform Chart. The results of the experiment showed that LabVIEW can be used to simulate simple circuits like a temperature monitor.

The temperature signal can be generated and monitored inside LabVIEW, so as the output results. Added functionalities like unit conversion and alarm activations can also be simulated. In the previous experiment, an internal temperature signal was generated using a virtual Dial software. In this experiment, the temperature signal will be provided by an external power source. The previous block diagram was used but edited to replace the internal temperature source with an external source. The output results were observed using a Waveform Chart.

As can be seen in the Fig. 2, the internal temperature signal source was replaced with the DAQ (PCI-6025E Data Acquisition Card) that is connected to a DC power supply with variable voltage output control. Varying this voltage simulated an incoming temperature signal.The signal was also passed through Multiply and Add functions to convert it from a Celsius value to a Farenheit equivalent. A Waveform Chart was used to display temperature variation with time. An Alarm LED was added that is activated when the temperature signal is more than a threshold level selected using a Vertical Pointer slide.

This system was also tested by pressing the Run button (arrow icon) and using the While Loop function to keep the program running until a Stop button is pressed. This way, a meaningful graphical data (temperature vs. time) was displayed on the Waveform Chart.Conclusion:The results of this experiment showed that LabVIEW can be used to simulate circuits like a temperature monitor that uses external source. This external source can be controlled and monitored by LabVIEW. As in the previous experiment, added functionalities like unit conversion and alarm activations can also be simulated. Fig. 2 DAQ used as interface for external signal