ITECH7410 - State Diagram for Oral-B Braun 5000 Electric Toothbrush

This assignment focuses on developing a state chart diagram for an Oral B Braun 5000 electric toothbrush, based on the analysis of its user manual and interaction with the SmartGuide. The solution details the functionalities of both the toothbrush and the SmartGuide, outlining the various states and transitions involved in their operation. Key aspects covered include the brush setup, brushing modes (including pressure alerts and quadrant timing), and the SmartScreen features such as tongue cleaning mode and timer settings. The assignment uses software to create a state transition diagram, demonstrating the operational flow and state changes of the toothbrush and its SmartGuide, offering a comprehensive understanding of the device's software engineering aspects.

VIDEO TRANSCRIPT (5 minutes long video)
Speaker:
Oral B toothbrush has two distinct states. One is the brush set and the other is the
SmartScreen. Now, we are going to look at the activities that happen under the brush set. The
functionalities of both Oral B Braun 5000 electric toothbrush and Smart Guide are analyzed by
reading and understanding the user manual. The techniques, modes and operations presented in
the device are analyzed. The software is used to draw the state diagram of both electric brush and
Smart guide. The features and functionalities are easy to grasp before using the toothbrush as
indicated on the manual. In the brush set, the first thing you do is you set up the toothbrush. The
head of the brush should be wet and then an individual’s favourite tooth paste can be used to
clean the tooth. The entrance of the power is a zero. When you set up the brush, you can now
connect the brush handle to the bristles and power it on. Powering it on will change the state to
one and show an indicator of the green light. One can brush the teeth. The brush head is used to
clean the teeth before enabling the electrical section to avoid splashing out the paste. In the
Brush mode, one begins the brushing process from the outside to the inside and finally the end is
to clean on the chewing surfaces of the mouth. Load the sensitive mode on the smart guide of the
toothbrush in the early stages of using the toothbrush to avoid getting the tooth gums damaged or
bleeding. One can consult a physician when the bleeding is continuous while loading the
sensitive mode.
Brushing the teeth is recommended to brush the teeth for 30 seconds per quadrant. If the
brush detects that a lot of pressure is being applied by the user, the brush will send a pressure
warning or a pressure alert which will take the brush to idle state. After 2 seconds the brush will
check if the pressure has been reduced; if the pressure has been reduced it will check the pressure
level and either proceed to brushing again else it will go back to idle state. After all the quadrants
are fully brush, you now power off the brush. Similarly, we have the smart screen. The smart
screen has few steps. The smart screen runs on a smart phone app. You power on, after 20
seconds, the screen displays the instructions on how to use the brush. After about 150 seconds it
synchronizes data from the tooth brush. While enabling tongue cleaning mode, it is
recommended to use the sensitive head of the electric tooth brush. As it is a sensitive cleaning
mode, the tooth paste is not required. One can brush without the tooth paste. Gently provide slow

motion while cleaning the tongue. Repeat this motion for the whole tongue. 20 seconds of gentle
motion on the tongue is enough for brushing. The Smart Guide helps to intimate the completion
of 20 seconds brushing, using a smiley face.
The timer is set for the professional timer mode and the 2-minutes timer mode. In 2-
minute timer, when two minutes completes, the device signals green color light with a short
shuttering sound. In professional timer, the green color with short shuttering sound is played for
every 30 seconds. This timing will vary with 40 seconds when it moves into the next quadrant.
Generally, deep clean mode is recommended. Resetting the timing for each time is not necessary
because, it automatically resets even if the device is either switched off or paused. To change the
timer mode to ‘two minutes’, the mode button should be long pressed for 3 seconds. After
showing 30 seconds on Smart Guide, the button should be pressed. Then, in the timer on/off
button should be pressed, to set 2-minutes timer. When excessive pressure is given on the tooth,
the green light changes to red light. Then, the cleaning mode will automatically change from
daily clean or deep clean mode to sensitive mode.
This process is checked periodically when giving a small press on the toothbrush, while
brushing. After completing brushing and finding the pressure sensor it will be automatically
turned off and enables the tongue cleaning mode.