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KEGERATOR TEMPERATURE CONTROLLER
YOUSEF ALBADR, ABDULKAREEM ALSENAN, RICHARD BERNARD, PUNYA JAIN
TEST PLAN
Version 1.0
11/24/2012
Test Writer:
Yousef Albadr
Test Case Name:
Power Supply Test
The power supply is required to provide
power to the sensor and our micro controller.
The power supply will have to regulate down
from the 120V AC to a 3.3V DC level.
Test ID #:
Description:
Tester Information
Type:
Name of Tester:
Date:
Hardware Ver:
The measured voltage
should be approx. 3.3V -5 V
DC.
Voltage regulator should
continue working with no
output errors.
Overall test results:
N/A
4
Switch the power off,
then switch it back on
The measured voltage
should be approx. 3-3.3 V
DC. With no high ripples in
the output.
Fail
3
Expected Result
The measured voltage
value is expected to be in
range of 108 to 121 V AC
Pass
Step
Action
Test input Voltage for
regulator from outlet.
Place one probe into
each of the two
terminals while grasping
the insulated portion of
the probes (never touch
the metal conductor
during testing). The
multimeter will display
the voltage
Measure output voltage
from the regulator to
the microcontroller. Use
an oscilloscope to be
sure the device does not
oscillate.
Measure output
voltage from the
regulator to the sensor.
Use an oscilloscope to
be sure the device does
not oscillate.
2
11/24/12
1
Time:
(Make sure to wear protection before you attempt to do this test) Set the
multimeter to AC voltage or DC voltage depending on what you are
measuring (Maybe appear as VAC, AC V, or a V beneath a wavy line)
Setup:
1
PST-1
Comments
Test Writer:
Kareem AlSenan
Test Case Name:
Microcontroller Integration test
The input provides a constant 3.3V DC source into the
Microcontroller and powers it up. In our case the user’s manual
input value is the desired temperatures in Fahrenheit for
demonstration purpose. The temperature sensors are the main
inputs of our system. It is used to detect the environment
(Freeze) temperature and sends them to the Microcontroller.
The Microcontroller evaluates the measurements and sends the
appropriate response to the compressor unit (on/off) and sends
out measurements to the LCD to display for the user.
Test ID #:
Description:
Tester
Information
Type:
Name of Tester:
Date:
Hardware Ver:
See if the microcontroller is
outputting the changes.
The microprocessor should continue
working properly
Observe the compressor turning on or
off each time it crosses the set point.
Overall test results:
N/A
4
Expected Result
If the microcontroller is programmed
correctly the start screen will display
the current temperature and a set
temp.
Fail
3
Action
Connect the
temperature
sensor, LCD,
buttons, and
Power supply to
the main board.
Heat, or chill
the
temperature
sensor with ice
or a lighter.
Power off the
microcontroller,
then power on
Increment the
set point using
the buttons; get
the
temperature to
cross this set
point.
Pass
Step
2
11/23/12
1.0
Time:
Input for the microcontroller is 3.3 Volts DC that has been converted from the wall 120 V AC.
The output from the microcontroller is connected to the temperature sensor, control buttons,
compressor unit and LCD display.
Setup:
1
MCT-2
Comments
Yousef Albadr
Kareem AlSenan
Test Writer:
Test Case Name:
Temperature Sensors Unit test
Temperature sensors detect the environment temperature and
send the measurement to the microprocessor.
In this case we need to get the measurement from the sensor
and determine if the compressor needs to be on or off.
Test ID #:
Description:
Tester
Information
Type:
Name of Tester:
Date:
Hardware Ver:
1.0
Time:
Sensors are connected to power supply (3.3 V). The outputs from the sensors are
the connected to the microcontroller.
Setup:
4
The sensor should work correctly and
measure the temperature
Overall test results:
N/A
3
Change room
temperature
Place sensor
under 5
Fahrenheit temp
The sensors should read the current
room temperature
Sensor should be able to indicate the
change of the temperature and
update the reading.
Fail
2
Expected Result
Pass
Step
1
Action
Connect the
sensors to the
board and power
the circuit and
check the
sensors are
working
Measure the
temperature
Comments
TST-1
11/24/12
Test Writer:
Yousef Albadr
Test Case Name:
LCD display Unit test
The input supply provides a constant 3.3V DC source into the
LCD display and powers it up. The Microcontroller sends a
signal of current room temperature, read by the sensor to the
LCD display. The LCD display then decodes the signal it is
receiving and displays the actual temperature.
Description:
Tester
Information
Name of Tester:
LCD should show the correct
programmed menu provided for the
user
The LCD should show similar output
to the one showing with Meade
TS13C-M. Should be within a 2 degree
range from the PDS.
The LCD Should display the correct
reading.
Overall test results:
N/A
Expected Result
The LCD must light up and display
Fail
4
Action
Fix the LCD
display into
the socket
and power the
circuit
Change user
settings and
temperature
ranges
Reset
sensors, take
5 different
measurement
for different
temperature
ranges
Turn the LCD
off, then Turn
on
Pass
Step
3
11/22/12
1.5
Time:
LCD is connected to the power supply and the microcontroller. (Use Meade TS13C-M
Temperature Sensor with LCD to compare the temperature reading)
Setup:
2
LCDT-1
Type:
Date:
Hardware Ver:
1
Test ID #:
Comments