Writing report

Digital Electronics I Laboratory

Digital Electronics 1 Lab Project

Name

Report submitted on: , 2018

Table of Contents

2

List of Figures

3

I. Introduction

1.1 Background and Theory

The purpose of this project was for the students to connect the theories learned in digital electronics lab with Labview. Labview is a software used to aid students during different Electrical Engineering labs. The software combines physical components such as motion detectors, power amplifiers, as well as many others to allowed the students to transfer the data collected and analyze what was found. Thus, students are capable of understanding what was learned in class better and apply it to their studies.

This project was intended to measure the temperature of two different locations by use of two surface temperature sensors. The two surface temperature sensors were placed at two different locations. In order to measure the temperature, the time graph from Labview and the measured temperature between the two location were used.

II. Methodology

2.1 Equipment and Procedure

The experiment setup which was used consists of two temperature sensors in Fig.1 (surface temperature sensors) along with Vernier DAQ can be seen below in Fig.2.

Fig.1 Fig.2

Data acquisition was used to connect both the temperature sensors with it, and the device was used to plug into the computer where Labview is installed. The two temperatures were placed in different rooms to measure the temperature of different rooms and compared them. After that the data was taken by DAQ Vernier which was transferred the data to Labview and graphs were made by Labview. Two graphs were made: one for one room temperature and the other for other room temperature.

The experiment setup was shown below:

Figure(2)

This software implementation was made on Labview software. This contained a following blocks like surface temperature sensors, led indication block, high temperature block for both rooms, low temperature bocks for both rooms, temperature scaling block to scale temperature value which was given out from surface temperature sensors along with set dynamics data attribute blocks to signal in and signal out and the main block was written to measurement file, which was used in making of graph. Temperature sensors blocks was used for temperature measurement and their graph was made by using dynamics data attributes blocks. And in software if our temperature is greater than desire temperature then our LED indication is on. Temperature scaling block is used to scale the temperature values.

Both channel one and two are connected to indicator. by using the signal manipulator the student splitted the signal output into two wiring, one is connected to the mean value and one is connected to waveform, and then the student took all wiring and merged it into one wire and connected to the Dynamic data. The dynamic data type includes the data associated with a signal, as well as attributes that provide information about that signal, such as the name of the signal or the date and time the data was acquired. Attributes specify how the signal appears on a graph or chart. For example, if the DAQ Assistant Express VI to acquire a signal and plot that signal on a graph, the name of the signal appears in the plot legend of the graph, and the x-scale adjusts to display timing information associated with the signal in relative or absolute time based on the attributes of the signal.Then, we connect the three Dynamic data into write measurement file and adding the three indicator, filename, enable and saving data to make the appropriate table when saving the data.

Figure(1)

As in our setup led indication is installed so that if the temperature of one room was high then our led was indicated the light. Led was linked with temperature sensors and monitors the value of temperature. At normal temperature led was switched off. And software implementation is given in Fig.1.

III. Results and Discussion

3.1 Results and Discussion

The two different graphs were made on Labview was given below:

Graph1:

This graph was made up for first room and second room first reading, this was clearly seen that the curve of fist room was less sharper than the second room.

Figure(3)

Graph2:

This graph was made up for first room as well as second room last reading, this was clearly seen that the curve of fist room was less sharper than the second room.

Figure(4)

This was clearly seen that the temperature of first room was lesser than the second room.

IV. Conclusions

4.1 Experimental Conclusions

In conclusion the condition of room’s condition affects the room temperature. As the temperature of room was less, the graph was sharper and vice versa. The students learned a lot about LabView from this project. The results of this project were very satisfactory. We established a very good understanding of multivariable feedback controllers design and tuning. We were able to identify some hardware limitations which are listed in the future

improvements of the system. It also made the students do research on software, so that the

project could be completed.

V. Appendix

Appendix:1

Data1:

LabVIEW Measurement

Writer_Version 2

Reader_Version 2

Separator Tab

Decimal_Separator .

Multi_Headings Yes

X_Columns One

Time_Pref Relative

Operator Ahmad

Date 2018/11/09

Time 16:20:04.4003472328186035157

***End_of_Header***

Appendix 2:

Data 2:

LabVIEW Measurement

Writer_Version 2

Reader_Version 2

Separator Tab

Decimal_Separator .

Multi_Headings Yes

X_Columns One

Time_Pref Relative

Operator Ahmad

Date 2018/11/09

Time 16:33:44.6578774452209472656

***End_of_Header***